Sheet-feeding device.



PATENTED MAR. 5, 1907.

m 0 .im z, T n e, w U y 7 E.foJ. Gm I .DW MGJ f DNm TL www. Bmw TM EN SM @fw d 2 7 l@ WZ di PATENTED MAR. 5, 1907.

E. TYDEN.

SHEET EEEDING DEVICE.

APPLICATION FILED .TUNE 8. 1905.

4 SHEETS-SHEET PATENTED MAR. 5. 1907.

E. TYDEN.

SHEET FEEDI1\TGl DEVICE.

APPLICATION FILED JUNE 8, 1905. 4 SHEETS SHEET 3.

PATENTED MAR. 5, 1907` E. TYDEN.

SHEET EEEDING DEVICE.

4 SHEETS-SHEET 4.

APPLIOA-TION FILED JUNE 8, 1905.

PATENT orrrcn.

EMIL TYDFN, OF HASTINGS, MICHIGAN.

'SHEET-FEEDiNc-r. DEVICE.

lino. 845.90m

Specification of Letters Patent.

'Patented Merch 5, reo?.

.Application filed June 8,1905. Serial No. 264,217,

To all whom/ zit may con/cern:

Be it known thatI, EMIL TYDEN, a citizen of the United States, residing at Hastinga'in "i the county o f Barry and State of Michigan,

have invented new and useful Improvements 'inSheet-Feeding Devices, of which the fol lowing is a specification, reference being had tothe accompanying drawings, forming a partjthereof. i n

'ffheprpose of this invention 1s to provide Ilia nia/chine for feeding sheets of metal, paper,

l('ard or other sheet material to any mechan- `'ism y Which it is to be operated upon, as .for

" rintmg, forming, or cutting, such machine being adapted to' separate an individual sheet from a pile, avoiding the risk' of takmg more than one bv reason either ofthe close acking of the pile or of adhesion of the suraces or engagement at the edges by burs formed.' in cutting or other cause.

It consists of the features of theelements land features of constructionA set out in the claims.

vIn the drawings, Figure 1 is a side elevation of, such machine. Fig. 2 is a section at the line 2 2 on Fig. 1. Fig. 3 is a 'ection at the line 3 3 on Fig. 1. Fig. 4 is a etail section at the line 4 4 on Fig. 1. Fig. 5 is va detail section at the line 5 5-on Fig. 3. Fig. 6 is a section at the line 6 6 on Fig. 5, Fig. 7

.is a plan view of a cam for closing up the divided nut lconcerned in the raising and lowering operation. Fig. 8 is a detail section "at the hne 8 8 on Fig. 9. Fig. 9 is a's'ection at the line 9 9 on Fig. 8. Fig. 10 isa detail f section-at the line 11 11 on Fig. 3. Fig. 11 is a detail elevation of an adustable crank for varying the stroke of the og which operates the table-elevating devices.

4o The machine shown in the drawings comprises a standard 1, having a cross-head 2, with upwardly-projecting arms 3 `3 atv the ends of the cross-head, and .upon the upper en'ds of these arms there is mounted rigidly i bed 4. Upon the bed 4 there are mount` ed with capacity for adjustment toward and i from the longitudinalfcenter line lateral guideposts 5 5, and extending across the center ine and adjustable longitudinally with re-v kspectto thetable at the middle of its width `the front guidingpost 6. A platen'or blankcarrying table v7 'is guided 1n 'its vertical movement between these three guide-posts, such table being swiveled on the upper end of 5 5 av screwfshaft or spindle 8,.,which extends down through. the bed 4 and telescopes Within the standard 1, which has the vertical bore 1a to receive said screw-shaft- Upon the top of the cross-head 2 of the standard l there is bolted fast a guide-chair 10, between Whose lateral flanges 10a 1()a the two similar halves 11 11 of the divided nut are lodged and guided for movement toward and from each other to open and close the nut. The chair 10, having a central aperture 10b for the screw-shaft, is counterbored about saidV aperture on the under side at 10c to afford a seat for the camlate 12. Each half of the nut 1 1. has a stu 11a, which extends down through a slot 10d in the chair 10 and below the chair is reduced in diameter and engages an eccentric cam-slot 1'2a in the cam-plate 12, the two slots 12a for engagement of the two studs 11, having like eccentricity, sc that when the cam-plate is turned about the shaft in one direction the two halves of the divided nut aro forced apart in their guideways on the chair, and when the cam is turned in the other direction they are drawn together. The diameter of the cam-plate is greater than the width ofthe chair, so that a segment of cam-.plate protrudes laterally beyond the chair, and a handle 12b, secured to such pr`otruding segment of the cam-plate, has a sufficientrange of movement outside the latter for operating the camlplate as indicated to open ,and .close the nut. The nut, it will be understood, is threaded for engagement fwith the screwshaft or spindle 8 of the platenor table 7.

Above the bed .4 there is mounted on the shaft 8 a ratchet-plate 13, which has a hub provided with an .annular groove 13, said groove being engaged by the two prongs 414 14 of a forked retaining-plate, which are bolted fast to the top of the bed with their facing semicircular recessed edges engaging the annular groove of the hub for retaining the ratchet-plate on the top of the bed rotatable about the axis of the shaft or spindle 8. The shaft has a longitudinal groove with which a lgages for adapting the ratchet-plate to rotate the shaft while permitting the latter to slide longitudinally throughit. In brackets 'l5 15, made fast to the under side of the bed 4, there is journaled a shaft 16, having at one end a crank-plate 17, on which there is mounted for radial movement a slide 18,-from which projects a crank-.pin 18, which is by this TOO spline or feather 14b of the ratchet-plate en- I i means made adjustable in respect to its distance from the center of the shaft for modifying the stroke which it may give to any partside-f the slide a pivotfstud 22fl projects out I .-.Wardlypand a pitinan 23 connects the crank- ..pin:18a.with the stud 22, and thereby the .fdog 21isis -reciprocated to give stepbystep movement t the ratchet-disk as the shaft 16 rotates, one-.step movement of the dog being zofpro'duced y'by each full rotation of the shaft, the length of th'e step -being dependent upon the adjustment of the crankpin toward'and l from the center of the shaft.

It will be understood that the mechanism 2 5 thus far described will feed the screw-shaft 8 mnd the platen 7, which it carries,upbetween the guides 5 5 and 6 a uniform` distance for each rotation of the shaft 16, and the adjust- -v-ment of the crank-pin for governing the feed- ;o stroke of the dog may equalize the lift of the platen at each stroke. with the thickness o'l" the individual blanks which are carried on the platen and are to be taken therefrom one iby'one by the feeding devices hereinafter mentioned.

ylin the veitical transverse plane ofthe axis of the screw-shaft ta two posts 42 42 are erect- -edrigidly from the bed 4 at opposite sides and at equal distances from the center'. 4o iThese posts are connected at their upper end by a cross-head 43, upon the upper side of which there is mounted thc downwardtvopen lcylinder 24, having a piston 2:3, with its stein 26 projecting out at the lower end ofthe i5 cylinder and through a giiidc-lniaring 27, rigid with the cross-head. 'l`hc stein oll the lpiston is hollow and opens above thc piston i-nto the cavity ol thc cylindcr. At` thc lower end below the cross-head it has oppositely- 5oprojecting horizontal tubular arms-26 2o",

on which respectively are sleeved thc horizontal members of the T-littings 26h 2o", whose vertical men-ibers are connected by pipe-sections 28 2S with suction-nioiiths 2li R5 29, mounted at'the lowcr ends of said pipesections, for the purpose of grasping by snction the blanks upon whose siirfaj'e they may press for liftingr t-licni from thc pilc. A pipc 3l, leadingr from an source ol' rai'clicd nii' oc, (not shown) l'or thi` piii'posiI ol' producing suction, is nioiintcd on tliostainlard l and.`

extends with proper elbows iiialongside onc of the .standards 42 and is connected into tln` top olthc cylinder '-l for producingr suction t-liciein above tln` piston to caiisc the lat lei' to suckers 29 29 through the hollow stem 26 of thepiston and. connections above described.

It will besecn, therefore, that the lifting oft-ft" lthe sucker-mouths by the piston occurs si; multancously with the production of a' par#4 tial vacuum in said mouths to cause theltd 'engage the sheet to he lifted, .and that the said mouths have a range of operative posi.-

'tion for such engagement of thesheets nearly equal to the entire stroke'of the pisto11$25-fin the cylinder 24-that is, the mouths. willen-L gage a sheet upon their encounter therewith,

and their descending movement willbe lim-g ited by such encounter, and the liftingmovement will be equal only to the ,descending movement actually performed in each case,

so that the position of the top ofthe ile may vary to the amount of the full possib e stroke of the piston less the minimum lift necessary.- for separating the blank from the pile. 1t,l will he understood that suitable valve or valveswill-be irovided to control the suctiona'nd venting o the mouths. -Sueh valvesare shown at 32 on Figs. 1 and 2 and at-54 on Fig.

4; but their specific eonstructionand operation need not he described for the purpose of 4the present application.

Each of the guide-posts-5 5 and 6I has a chamber opening back from its guide-face in which there is pivotally mounted a dog 60,' having-a tail 61 below its pivot stopped against the bot-tom or back of the 'recessand a nose 62, which protrudes past the guideface when the dog is thus stopped, a sprinr 63 being provided lodged in a socket forme in a boss 64, pressing against the dog to hold the nose protruded and the tail stopped, as ldeiafribed. The noses 62 of the three dogs are on the same level and are adapted to afford support at three sides for a .blank or pile of blanks which ma) be lodged above them. When thc platen 7, having a full pile of blanks thereon, is advanced u ward between thi` guide-posts, the pile of )lanks engaging the iuider sloping side of the dogs forces thcm back and holds them back in the recesses in which they aielodged until the bottom blank of the pile passes the upper corner ot' thc dogs., alid thereupon the dogs thrust their noses forward under said bottom blank and are in position to support thefreniainder ol' thepile, while` the platen 7 isallowed to descend to-reccive another pile. 'l`he range of movement of the lift-in if devices which is atl'ordcd by the length of t ie cylindcr il is siillicicnt to brin" thc presser and siii-kers down to thc top blank withoutany further liftingr ol thc pile after they are lodged on the noses of thc dogs, and .during sensor lodged on the platen ready to be fed up under any that may still remain lodged on the dogs.

Upon the bed 4 there is mounted a fixed table 35, which has its upper surface substantially at the level of the upper surface of the platen or blank-support 7 when the latter is at its lowest position and which extends from the front end of the machine to the for- Ward edge of said platen, making, with said platen, a practically continuous table when the platen is at said lowermost position. BeA tween the bed t and the 'fixed table 35 there is a carrier comprising sprocket-wheels 36 and 37, suitably journaled in. brackets 3S and 39, respectively, projecting upward from the bed 4, and an endless chain 40, propelled about said sprocketwheels. Uponthe upper side oi the table 35 there is mounted an upright bracket 41, guided longitudinally with respect to the table by means of a vertical `llangc 41a, which extends through a slot 35a inthe table, and said bracket is attached i lo the upper ply oi the chain 40 by bolts 41h,

. thep'ile .which has heen accumulated on the taking into the lower edge of said guideilangre The bracket 41 has a plain vertical surface facing toward the position occupied by a pile ol blanks on the platen 7 4 44 is a vertical gagearod which projects upward from a horizontal arm 45, ,which is fastened by a bolt 46 to the under side oi the table 35, so that by swinging' said arm 45 about the bolt the 'distance o the gage-rod laterally from the longitudinal center line of the table may be modiiied at will.

The shaft 36" of the .rear sprocket-wheel 36 is },\1'ovided with a crank-handle 36h for rotating it to propel the bracket 4l forward and to nretract it. The purpoeeol' this provision is that during the time during' which the pile of blanks on the platen 7 .islbeingr ree duced one by one the attendant may have accumulated a new pile on the `lined table with the lateral edge d'eiiued by tho-gageaod 44 and the rear edge delined by the bracket AT, and when the platen has be'en fed up to the position at which the dogs 6U engage underthe bottom of the remnant of the pile remaininpon the platen and the operator opening the (lividi-id nut has caused the platen to be released and to drop lo its lower position liked. tablemay be moved forward by the carrieri and lodged upon the platen underneath the remnant of theformer pile, which is at this stage lodged on the dogs, arnl the divided nut being then closed up the stepby-step upward-feeding movement ol the platen will be resumed, the new pile will be carried up against any remnant remaining ol' the old pile, and all will be carried up ben fore, step by step, for engagement and re moval, blank by blank, Yfrom 'the top of lthe pile. g

ln order that the new pile of blanks may invariably be only of such height as to enter under the noses 62 of the'dogs'O, as described, even though the operator through inattention may have accumulated a higher pile than can thus enter, the posts 5 5 are formed with guard-[langes frL 5, projecting toward each other from the two opposite posts, said flanges having V-shaped lower edges 5l), which overhang the path of the pile of blanks as it is carried forward onto the platen, and if the pile is higher than the lower edges of the guard the blanks constituting, the excess will encounter said guards and be scraped olf the pile, leaving it of the proper height. V

lt 'is desirable that the descent of the platen when the threaded stem is released b y opening the divided nut should be cushioned or checked somewhat, so as to prevent undue jarring oi the entire machine and possible injury to the parts immediately subject to the shock, and for this purpose preferably the lower end of the tubular bore lu in the standard l is closed by a plate 1X, having` a small airevent aperture 1y, which by` limiting the escape oi the air will cause the descent of theI platen to be checked somewhat, notwithstanding the escape which can occur around the siem through thc thread and the slight space that may be left even ,outside the thread; but iu order to more ell'ectually check and cushion the descent the end ol' the threaded stem S may be provided with u piston-likehcad 8, .litting somewhat accurately in the borel l and practically limiting lluI es cape ci air to the aperture ly.

Upon thc upper side ol" the bed 4 there is mounted in a suitable bearing-bracket 7; a rock-shz1fit 73, having un operatiiig-handle 74 projecting' outward lrom one end und n. lever-arm 75 projecting inward irom the other end for engaging under the hub or ccntral boss of the platen or blank carrying tzible 7 in position to be lorced up against the latter when the handle-lin er 74 is depressed l'or liltinpy theta-ble a short .listance- This rock-shait and its lever-arm serves the purpose of lifting the table after it has descended by gravity for 'receiving a new pile ol blanks, lirst, so that the thread of the threaded spindle or stem S may engage properly with the divided nut lor permitting the lat ter to be closed up,1 and, second, so that the top ol the new pile ol' blanks lodged on the platen may be lifted up against the under side of the remnant ol" the 'former pile lying upon.the dogs and lil't the whole quantity, including' the new pile and the remnant of the former pile, up to the most desirable position l or encounter olE the blank-separating devices with the top blank, so as not to require any greater desceiulini,r and lifting' movement of the piston 25 and the parts carried thereby than necessary during the feeding out ol' thc blanks while theyare carried IOO llC

and advanced .upward step by step .ion the platen. After advancing a new pile onto the platen by rotating the crank-handle 36b the operator will depress the lever-handle 74 and at the same time operate the devices for closing up the divided nut, so as to engage the nut properly with the threaded stem 8 of the platen when the latter has been lifted to the proper point by means of the lever-arm 75 of the rock-shaft 73.

l. In a machine for the purpose indicated, in combination with a fixed table, a vertically-movable platen foi` supporting a pile of blanks at the end of the fixed table; means for lifting the platen; vertical guides between which it is lifted; dogs on said guides adapted to engage under the edges of the pile of blanks and to yield back to permit the pile to pass them, and means on the fixed table for advancing a pile of blanks on the platen below the level at which the dogs thus engage.

2. In a machine for the purpose indicated, in combination with a verticallymovable platen for carrying a pile of blanks; supports at the sides of the pile .and dogs on said supports adapted to engage under the pile at a distance above the lower limit of the movet ment of the platen; a fixed table adjacent to one edge of the platen at said lower limit, and means mounted on said fixed table for moving the pile from the latter onto the platen when it is at said lower limit.

3. In a machine for the purpose indicated, in combination with a vertically-movable platen for carrying a pile of blanks, means for lifting it to feed the blanks upward; means for engaging under the lower edges of the pile when it is thus lifted; means for permitting the platen to be lowered away from the pile when the latter is thus engaged; a fixed table adiacent to one edge ofthe platen at the lower limit of the latter; and means on said fixed table for advancing the pile of blanks therefrom onto the platen under the elevated pile.

4. In a machine for the purpose indicated, in combination with a platen for carrying a pile of blanks, means for lifting the laten to elevate the pile; means for engaging the pile underneath it`s lower edges when thus elevated to uphold it independently of` the platen; a iixedtable adjacent to one edge of the platen at depressed or lowered position, and means mounted on the table for moving the lpile of blanks therefrom onto the platen underneath the elevated pile.

-5. Ina machine for the purpose indicated, in combination with a platen for carrying a pile of blanks; a screw-shaft or-standard for said platen; a divi-ded nut cooperating with the screw-shaft for upward movement of the# latter means for rotating one of said lcoper- Iating elements to elevate the shaft and the platen; means for spreading the divided .nut to permit the shaft and platen to descend guides between which the platen moves vertically; dogs mounted on said guides adapted to engage the pile of blanks under its edges at elevated position; a table adjacentlto-the.

platen at lowered position, and means for moving the pile of blanks from the table onto l the platen- 6. .In a machine for the purpose indicated, 4

in 4combination with means` for supporting and elevating a pile of blanks; means for engaging underneath the edges ofthe pile'when it is elevated for supporting it independently of the elevating means; means for permitting the elevating means to-be withdrawn down ward, and means for advancing a new pile Y,

laterally onto the elevating means under the elevated pile.

7. In a machine for the purpose` indicated, in combination with means for supporting and elevating a pile of blanks, means-for engaging the pile underneath its lowei1 ed es when the bottom thereof is elevated. to-a etermined level, adapted,when thusengaged to support it independently of the elevating means and without further elevation.;.means adapted to be advanced against the ltop of the pile for encountering and engaging the top blank having a range of operative position for such action which extends from a limited distance above said determined level down to the same; means for permitting the support to descend after such engagement of the pile, and means for advancing a new pile laterally onto the lowered support.

8. In a machine for the purpose indicated,

TOO

in combination with a platen for supporting I andelevating a pile of blanks, means for lifting-the platen to elevate the ile g vertical guides on three sides of the pat of vascent of the platen for guiding and restraining theV pile in three directions;- dogs mounted; on said vertical guides adapted to protrude into the path of the pile for engaging underneath the three bottom edges of the same means" for permitting the platen to descend after' the pile is lodged on said dogs; a fixed table adjacent to the fourth side of the platen at the lowered position of the latter; means on said table for moving the pile therefrom across said fourth side of the platen onto the latter, and guards overhanging the path of the pile in such movement located as low as the bottom of the pile sup orted by said dogs for removing from the aterally-advancing pile any blanks above that level while it is bemg advanced onto the platen.

9. In a machine for the purpose indicated', in combination. with a platen for supporting and elevating a pile of blanks, and means for Ilo lifting it to elevate suchrpile; vertical guides pile Within the limits o'l" the dimensions of the blanks does mounted on said O'uides ada )ted l`l T5 I to engage underneath the pile of blanks n'hen lil'ted to certain elevated position; a 'lixed t cred position oi' the latter 5 a vertically-extended follower mounted and provided with a longitudinal guideway on said iixed. table; a propelling-chain and sprocket-wheels about ro which the sanic islcarried attached to said 2 o said tw'opai-ts to raise the support, and means for operating the nut to release the stein, the

cavityl'of the standard in which the stein tele- .fseopesbeing elosed at .the bottom for infipris-` 1 *ouiiigtli'e air therein under the stein to cush "ion'fthestemin its descent. f 11..,111 a machine for the purpose indieatedb` 'in combination with a support `for blanks comprising` a stem and disengageable means for engaging the stem to raise the support 'and means for diseiigaeing` the stem t permit the stein and support to descend, the standard having a' vertical bore in which the stem 'teleseopes,said bore being substantiallyclosed t at the end. to ini descending stein. v

i2. In a niavhine i'oi' the purpose ind lcated,

prison the air to cushion the ai in combination with a support for blanks@ p ble ad]acent to one side ol the platen at lowstandard in which it is mounted. and disengageable means for feeding` the support up Ward; means for efl'eeting such disengagement to permit the support to descend; a ro ek-sl-iaf t mounted on t he st an d ard having' a lever-arm protruding under the support, and means for rocking the shaft to cause said lever-arm to lil't the support when disengaged 'from the upward-feeding means.

having` a threaded stein, a standardvin which .the stem is mounted; a divided iiutior en- EMIL TYDEN.'

In preseneeiofliiAsS. BURTON,

1.3. In a machine for the purpose indie ated in combination with a support for blanks y In testimony whereof l have hereunto setl gaging; the threaded stein g means for rotating one of the engaging elements to raise the v 

